Luminaire



D. E. HUSBY ETAL LUMINAIRE 7 Sheets-Sheet 1 Filed Nov. 13, 1958INVENTORS Donald E. Husby,C|em W. Eberhorf and Edmund L. lzzl.

WITNESSES ATTORNEY D. E. HUSBY ETAL Nov. 20, 1962 LUMINAIRE 7Sheets-Sheet 2 Filed Nov. 13, 1958 m m I ONN 0mm mum in 9 wt ND .Nov.20, 1962 D. E. HUSBY ETAL 3,065,338

LUMINAIRE Filed Nov. 13, 1958 7 Sheets-Sheet 5 lg- 1 H6 I 1 I Y H4 i E YNov. 20, 1962 Filed NOV. 13, 1958 Fig. IO.

D. E. HUSBY ETAL 3,065,338

LUMINAIRE '7 Sheets-Sheet 5 Fig. H.

NOV. 20, 1962 H s ETAL 3,065,338

LUMINAIRE Filed Nov. 13, 1958 7 Sheets-Sheet 7 tt'es 3,%5,338 PatentedNov. 2%, 1962 3,G55,338 LUMHNAERE Donald E. Husby, Fairviev Farts, (ZlemW. Eherhart,

Avon Lake, and Edmund l2. lzzi, North @imsted, Ghio,

assignors to Westinghouse Electric tcorporatieu, East Pittsburgh, Pa, acorporation of llennsyivania Filed Nov. 13, 1953, tier. No. 1 73,72392t) Claims. (Ci. M tt-25} This invention relates generally to lightingfixtures and more particularly to a luminaire which is employed instreet lighting applications.

While lighting fixtures of this general type have been used in the past,the ballast or transformer required to operate a mercury vapor lamp hasnot been included in the assembly of a mercury vapor lighting fixture,particularly a power factor corrected ballast or transformer, as theweight and the volume that would be occupied by the ballast ortransformer has been prohibitive. In addition, the heat generated by thecomponents has been a factor seriously limiting development of aluminaire having the components thereof closely associated with thebasic lighting system which in itself generates a large amount of heat.Additionally, it has been diflicult to design a low cost luminaireincorporating all of the associated components so that they are easilyremovable and still obtain a pleasing outer configuration. In order toeliminate these and associated problems, we have designed a new andimproved luminaire which utilizes a mercury vapor lamp and has a novelform of housing so that all of the luminaire component elements,including the aforementioned ballast or transformer, may be mountedtherein, and includes a novel latch mechanism and a closure assemblywhich positions the reflector.

One object of this invention, therefore, is to provide a luminairehaving a novel form of housing to enclose internally all of thefunctioning components utilized, therein, in a mercury vapor lampluminaire.

Another object of this invention is to provide a luminaire of the typedescribed in which the housing forms a support to which all of thefunctional component ele' ments are mounted therein in a novel manner.

Still another object of this invention is to provide a luminaire of thetype described wherein the reflector is mounted substantially within thehousing, with the bottom periphery of the reflector engaging theperiphery of the aperture in the closure assembly in a novel manner whenthe closure assembly is in its closed or operative position.

A further object of this invention is to provide a luminaire of the typedescribed having a novel unitary reflector construction easily mountedin position and which is positively aligned within the housing when thebottom closure assembly is in its closed or operative position.

Still a further object of this invention is to provide a luminairehaivng a closure assembly which is hingedly mounted to the luminaire ina novel manner so that the closure assembly can be rotated downwardlythereby exposing all the components of the luminaire.

A further object of this invention is to provide a novel luminaire whichhas a bottom closure assembly which must be rotated beyond its freehanging open position before it can be removed from the luminairehousing, thereby preventing accidental removal.

A more specific object of this invention is to provide a novel luminairehaving a unitary housing and mounting means, and a unitary closureassembly which is hingedly mounted to the housing and which is latchedinto its closed operative position by a recessed latch, therebyproviding a smooth contoured surface.

Still another specific object of this invention is to provide alumnnaire employing an elongated unitary housing containing the ballastor transformer and other components therein, while keeping the size ofthe luminaire at a minimum.

These and other objects of this invention will become more apparent uponconsideration of the following detailed description of illustrativeembodiments thereof, when taken in connection with the attacheddrawings, in which:

FIGURE 1 is a side elevation view of a luminaire constructed inaccordance with this invention, with certain of the parts shown insection;

FIG. 2 is a side elevation view of a modified form of luminaire havingballasts and transformers located therein, with certain of the partsshown in section;

FIG. 3 is an end view of the lamp socket and its mounting with a part ofthe reflector as viewed from the terminal end of the socket;

FIG. 4 is a top plan view of a part of the refractor and ringillustrating a clip securing the refractor to the closure assembly;

FIG. 5 is a cross-sectional view of a part of the globe and ring showingthe clip of FIG. 4, taken substantially along the line VV thereof;

FIG. 6 is an enlarged side elevation view of a series lamp socket usedin the luminaire of FIG. 2 and associated parts, with certain of theparts shown in section;

FIG. 7 is a fragmentary top plan view illustrating the latch mechanismfor the luminaires shown in FIGS. 1 and 2 and taken substantially 011the line VIIVII of FIG. 8 with certain of the parts shown in section;

PEG. 8 is a fragmentary view illustrating the latch mechanism shown inFIG. 7, and taken substantially on the line VIII-VIII of FIG. 7;

FIG. 9 is a longitudinal cross-sectional view of the lamp socket shownin FIG. 6 and taken on the line lX-IX thereof, with the film holderpartly removed from its receptacle;

1 16. It) is an enlarged sectional view of a part of the luminaireshowing the hinge mechanism for the slipfitter cover shown in FIG. 2 andconstructed in accordance with this invention;

FIG. 11 is an enlarged sectional view of a part of the luminaire showingthe hinge mechanism for the refractor closure assembly of the luminaireshown in. FIG. 2;

FIG. 12 is an enlarged transverse cross-sectional view of the luminaireshown in FIG. 2, and taken substantially on the line XIIXII of FIG. 2;

FIG. 13 is an enlarged bottom plan view of a portion of the luminaireshown in FIG. 2 with the cover plate and closure assembly in theirclosed operative position; and

FIG. 14 is an exploded view of the hinge hanger and refractor ring hingemechanism constructed in accordance with this invention;

PEG. 15 is an enlarged sectional view of a part of the luminaire showingthe hinge mechanism .in the closed position for the refractor closureassembly of the luminaire shown in FIG. 1;

FIG. 16 is an enlarged sectional view of a part of the luminaire showingthe hinge mechanism in the open position for the refractor closureassembly of the luminaire shown in FIG. 1; and

FIG. 17 is an enlarged sectional perspective view of a part of theluminaire showing the hinge mechanism in the open position for therefractor closure assembly of the luminaire shown in FIGS. 1 and 16.

While the invention is herein specifically described as embodied in astreet lighting type of luminaire, it should be understood at the outsetthat the invention in its various aspects can be readily adapted toother types of luminaires than that exemplified herein, andconsequently,

the following descriptive matter is not intended as limiting withrespect to any of the features of this invention.

The luminaire shown in FIG. 1 of the drawing is depicted as having ahousing 111 which is generally of shallow inverted dish-shape to give ita relatively flat silhouette. The portion of the housing adjacent to theinverted dish-shaped ovate reflector 14- slopes forward at the outer endto intersect flat horizontal base surface or rim 11 at a relativelysmall angle. The outer end of the base surface 11 of the housing 10 issubstantially semicircular so as to accommodate the reflector 14 when itis in its mounted operative position. The housing 11} has substantiallystraight sides 29 gradually converging from its largest diameter to theinner end of housing slipfitter portion 32 which is the portion of thehousing 1%) that is attached to the pipe support 40 or 41. The housingslipfltter portion 32 is of an inverted U-shape with the downwardlyextending legs integrally forming the side walls 29 of the housingslipfitter portion 32. Due to the convergence of the sides 29 of thehousing slipfitter portion 32 from the point where they are integrallyjoined to housing side wall 28, the housing 10 has a plan view (notshown), of a generally teardrop shape. The housing 11} may be made ofany suitable material, but preferably is formed of aluminum. It willreadily be seen that the housing slipfitter portion 32 ha a greatercross-sectional area at a point immediately adjacent the reflector 14than it does at its outermost end.

Integrally cast on the upper inner surface of the housing 10 is acentral longitudinal stiffening rib 13 extending from the base surface11 at the outer end of the housing 10 to a point adjacent the rearmostportion of the housing slipfitter portion 32. As shown in FIG. 1 of thedrawings, lateral ribs can extend downwardly at each inner side of thehousing 119, from rib 13 to the base surface 11, to thereby furtherstiflfen and reinforce the walls of the housing 11). In addition, thereflector 14, as shownin FIG. 1, has a longitudinal groove 23 extendingsubstantially the length of the ovate reflector '14. The reflector 14 ismounted, Within the housing 11} as described hereinbelow so that aportion of its upper, exterior surface rests against a portion of thelateral ribs 15 with the longitudinal rib 13 engaging the longitudinalgroove 23 to positively position the reflector 14 within the housing toand also to limit the upward travel of the reflector 14 after insertioninto the housing 10.

A refractor ring 20, as shown in FIG. 1, is mounted to the lower outerend of the housing slipfitter portion 32 by a hinge assembly 24. Therefractor ring 211 is latched r to the opposite end of the housing 10'by a latch assembly 26. The refractor ring 20, which i made of anysuitable material such as cast aluminum, is likewise dishshaped in orderto close the lower opening of the housing 10 and slipfitter portion 32.The refractor ring has a bottom opening suitable for mounting an ovaterefractor or other light transmitting member 22 and the opening isinclined from the relatively shallow outer end to a relatively deeperpoint spaced from the inner end thereof in such a manner that when therefractor 22 is mounted in the refractor ring 20, the refractor 22 isangularly displaced downwardly from the latch assembly 26 relative tothe longitudinal center line of the luminaire housing 1%}. Closureportion 21 of the refractor ring so has integral spaced ribs 19extending longitudinally along its inner surface, to reinforce theclosure portion 21. Closure portion 21 has a rim 23 about its peripheryengaging or mating with the rim portion 11 around the bottom opening ofthe housing 10 when the closure portion is in its operative closedposition.

Extending downwardly and inwardly from the top and side walls of thehousing slipfitter portion 32 at its outer end and generally at rightangles thereto is a mounting flange 2% which is formed integrally withthe housing 1.1). The mounting flange 21111 is shaped at the top toaccommodate a semicircular shape such as the upper half of a circularpipe support 41. As shown in FIG. 1, a semicircular adapter plate 36 aswell as a hinge hanger 11111 and leaf spring 123 can be fastened to theinner side of the mounting flange 2% at the bottom by nut, bolt and lockwasher assemblies 38 at the lower ends thereof. If desirable, theadapter plate 36 can be mounted to the housing rear flange 2011 so as toaccommodate a smaller size pipe support, as indicated by dashed lines 41As shown in FIGS. 1, 4 and 5 of the drawings, a bowlshaped ovaterefractor 22 having an integral circumferential outwardly extendingflange 78 is adapted to be received in the refractor opening of therefractor ring 20, with the flange 78 being seated on the upper side ofthe ring. The ovate refractor 22 can be securely mounted by refractorring clips 112. The refractor can be made of any suitable transparentmaterial, such as glass. Integrally formed on the inner surface of therefractor ring 2a and spaced about the circumference of the openingwhich accommodates the refractor 22, are several upwardly extendingprojections 114. The clips 112 are of a resilient material, such asspring Steel, and are generally rectangular in shape with a longitudinalcurvature, and each has a central opening defined by opposed integralspring fingers 116 which extend inwardly from opposite ends of each clipso that when a clip is forced down onto a globe ring projection 114, theends of fingers 116 will frictionally engage opposite sides of the globering projection 114 with the result that the fingers 116 are deflectedand stressed to the position shown in FIG. 5. The free ends of thefingers 116 will tend to dig into its globe ring projection 114, when itis attempted to raise the globe ring clip 1112 from the globe ringprojection 114, and thus prevent removal. The opposite ends of the globering clips 112, then, resiliently engage the refractor flange '78 andthe refractor ring 20, respectively, to provide a secure resilienthOlding means for retaining the refractor 22, in place within therefractor ring 21), while allowing the refractor 22 to move upwardlyunder externally applied stress for a short distance due to theresilient nature of the clips 112.

. As shown in FIGS. 1, 15, 16 and 17 there is mounted to the undersideof the housing 10, by means of rear flange 2011 thereof, an L-shapedhinge hanger 100. The hinge hanger 11111 is secured to the rear flange200 by means of nut, bolt and lock washer assemblies 38 passing throughthe hinge hanger apertures 37. The hinge hanger extends downwardly andinwardly of the housing slipfltter portion 32 and has at its free endtwo spaced semicircular hinge hanger pivot pins 111) integrallysupported by relatively narrow supports and 107. The hinge hanger pivotpins 111 are not located symmetrically relative to the hinge hanger 1%but, as shown in FIG. 14, are somewhat offset so that one hinge hangerpivot pin has its support 105 located at one lateral side of the hingehanger 1110, with the support 107 of the other hinge hanger pivot pin1111 spaced inwardly of the other side of hanger 1110 a suflicientdistance to accommodate the lateral width of a hinge pivot ring 106.FIGS. 1, 14, 15, 16 and 17 show that the hinge pivot rings 1% are formedintegral with a refractor ring hinge plate 102. The refractor ring hingeplate 102 is located on the closure portion 21, and is mounted theretoby the rivets 104 passing through aperture 103. The refractor ring hingeplate 102 has two outwardly extending projections with the outer endsreversibly curved to provide the tubular hinges 106 for receiving thepivot pins 110, respectively. As shown in FIG. 13 of the drawings, thehinge pivot rings 106 overlap with the hinge pivot pins 1111 therebyforming a hinge hanger aperture 111 as the only opening in the bottomsurface of the luminaire.

The aperture 111 is relatively small thereby restricting entrance offoreign matter into the interior of the luminaire.

As shown in FIGS. 1, 15, 16 and 17, the closure portion 21 adjacent itsrearmost portion has an upwardly extending integral end wall 1199. Ateach side of the wall 109 closely adjacent to but somewhat above thebottom surface 11 of the housing It) are horizontally extending hingestops 163 formed integrally in this example with the end wall 109. Thesehinge stops 1% will rotate with the closure portion 21 when it isrotated to its open position. Because outer ends 113 of the hinge stops168 are located above the base surface 11 of the housing 10, the closureportion 21 cannot be removed from the hinge hanger 106 by sliding it tothe side so as to disengage the hinge pivot ring 1% from the hingehanger pins 110. It becomes necessary, therefore, to rotate the closureportion 21 about its pivot axis defined by the hinge pivot rings 1%, toand beyond its normal free-hanging open position before the hinge stops1% are moved to a point where the outer ends 113 will be located beneaththe base surface 11 of the housing 1%.

To illustrate better the cooperation of the hinge stops 1G8 with thebase surface 11 of the housing 14), particular reference is made toFIGS. 15, 16 and 17. In FIG. 15, the closure portion 21 is in its closedoperative position, with the hinge stop 16% being located above thebottom periphery 11 of the housing 1.0. An arcuately bent, resilientleaf spring 121 as previously described, is mounted to the hinge hangerlot by means of the nut, bolt and lock washer assemblies 38, and extendsdownwardly so that the outer portion 123 of the leaf spring 121 rests onthe upper surface of the upwardly extending wall 189. The refractor ringhinge 192 cannot be disengaged from the hinge hanger 1% by sliding theclosure portion 21 to one side so as to disengage the hinge pivot rings1% from the hinge hanger pins 116, as upwardly extending side walls 25of the closure portion 21 and the hinge stop M8 will abut against theslipfitter side walls 29.

As shown in FIG. 16, the closure portion 21 is in its normalfree-hanging open position and is supported to the housing ltl by thehinge hanger 1M} rotatably engaging the refractor ring hinge 162. Whenthe closure portion 21 is in the position shown in FIG. 16, the outerportion 123 of the leaf spring 121 will engage the outer surface of thehinge pivot ring 1%. It is to be noted, as shown in FIG. 17, that theleaf spring 121 is mounted to extend downwardly of the housing 1%) andclosely adjacent to the hinge stop 108. As the closure portion 21 isrotated about its pivotal axis as defined by the hinge pivot ring 1%,the outer portion 123 of the leaf spring 121 will frictionally engagethe outer surface of the hinge pivot ring 1%. As the closure assembly 21is rotated beyond its normal free-hanging position, the outermostportion 113 of the hinge stop 1dr; will be located below the basesurface 11 of the housing it];

In this position, the closure portion 21 may be slidably removed byexerting a transverse force on the closure portion 21 to the right, asshown in FIG. 17. However, the hinge stop 1% will engage the outerportion 123 of the leaf spring 121 thereby to prevent removal of theclosure portion 21 unless the leaf spring 121 can be upwardly biased asufficient distance to allow the outermost portion 113 of the hinge stop1% to pass beneath the upwardly biased spring 121. The leaf spring 1121,thereby provides an added means for preventing accidental removal of theclosure potrion 21 from the luminaire.

To remove the closure portion 21, it is merely necessary to rotate theclosure portion beyond its normal free-hanging position and to biasupwardly the leaf spring 121 so that the refractor ring hinge 1412 canbe removed side.- ways to disengage the hinge pivot rings 1% from thehinge hanger pins Mil. The hinge stop 108 is designed so that it is ofsuflicient length to engage the slipfitter side walls 29 when theclosure portion is in its free-hanging open position.

The housing slipfitter gated, tapered, inverted portion 32 is arelatively elon- U-shaped portion of the housing 1t extending downwardlyfrom the reflector 14 and formed integrally with the housing 14}.Located at each side and adjacent to the outermost end of the housingslipfitter portion 32 are pipe support clamp bosses 42 formed integrallytherewith and having tapped holes 43 extending upwardly from the bottomof the bosses 42. Located intermediate of the reflector 14 and thehousing rear flange 2G0, and extending integrally and downwardly fromthe top wall of the housing slipfitter are two laterally-spaced arms 56.The arms 56 are located intermediate of the side waits of the housingslipfitter portion 32 and the longitudinal center line of the luminairehousing slipfitter portion 32, respectively. The arms 56 each have aslot (not shown) extending longitudinally thereof. Flanges 52 and 54extend the length of the arms 56 at each side and project inwardly.Flanges 52 and 54 form a slide with the aforementioned slot therein,between which is slidably mounted a pipe stop 59. The pipe stop 59 isring-shaped having a surface contour shaped like a circular truncatedcone 6% tapered towards the reflector 14 with its outer end having ahorizontal ring-shape portion 58. At the innermost portion of the pipestop 59, an inwardly extending integral flange 62 is located. Theinternal configuration of the pipe stop 59 consists of two hollowcylindrical cavities located concentrically therein, to accommodate thetwo standard diameter pipe supports, of which inner cavity 45accommodates the pipe support 40. However, outer cavity 57 has asubstantially larger diameter than the inner cavity 45" so as toaccommodate the larger diameter pipe support 41. Each of the hollowcylindrical cavities 45 and 47 have threaded apertures 49 and 51,respectively, through which a pipe stop bolt 64 may be threadedlyengaged to secure the pipe stop 59 to whichever pipe support, 4% or 41,that is used.

The pipe stop bolt 64 is shown in FTG. 1 as threadedly engaging theaperture 51 located in the outer cavity 47. Located adjacent each sideof the circular pipe stop 59 is a threaded pipe stop aperture 41. A.bolt and lock washer (not shown) extends through the slot of each pipestop boss 55 and engages the pipe stop apertures 59. The bolt and lockwashers when loosened permit vertical adjustment of the pipe stop 59relative to the slots in the pipe stop bosses 56, and may be tightenedto secure the pipe stop 59 at a desired adjusted position. A pipe stopbolt 64- extends through a threaded hole in the bottom of the pipe stopportion 58 and may be tightened to engage pipe support it; extendinginwardly of the luminaire housing slipfitter portion 32 and engaging theflange 62 of the pipe stop 59.

Extending between the oppositely disposed pipe support clamp bosses 42is a pipe support clamp 44 which adjustably mounted by means of bolt andlock washer assemblies 46. At each end of the pipe support clamp 44, thebolt and lock washer assemblies 46 threadedly engage the tapped holes 43in the bosses 42. As shown in FIG. 1, a small pipe support 44 isinserted into the luminaire so as to engage the pipe stop 59. Byadjustment; of the bolts inserted in the pipe stop holes 56, thevertical alignment of the luminaire may be determined after which thepipe stop bolt 64 is tightened and lock washer assemblies 46 are alsotightened. to engage the pipe support clamp 44 to the bottom surface ofthe pipe support 40, thereby securely mounting the housing 16 to thepipe support 40.

Located inwardly of the pipe stop 59 and closely adjacent to thereflector 14 on the side walls of the housing 10 are integrally formedsocket mounting bosses 68. Each socket mounting boss 63 has a suitabletapped hole to threadedly engage a socket mounting strap screw Extendingbetween the opposed socket mounting bosses 68, as shown in FIG. 3, is asocket mounting strap 66. The socket mounting strap 66 has a slighttwist to its configuration immediately adjacent to the socket mountingbosses 68. The socket mounting strap on has a generally U-shapedconfigurationintermediate of the opposed socket the two bolt andmounting bosses 68 and has a flat horizontal bight portion 69. As shownin FIG. 6, two pairs of apertures 67 are located near the extremities ofthe bight portion 69. A socket base 126 of insulating material, such asporcelain, is mounted to the bight portion 69 by socket mounting nut andbolt assemblies 72 extending through apertures 67 and base apertures141i. Molded integrally with the porcelain base 126 is a lamp socket118. By having two pairs of apertures 67 located in the bight portion 69of the socket mounting strap 66, the socket 18 can be mounted in twopositions relative to the center of the reflector 14. The light source(not shown) can be mounted in the socket 18 with its light center (notshown) located in a forward or rearward position to provide differinglight distributions. By having an adjustable mounting of the lightsocket 18, greater flexibility can be given to the light distributiondesired.

FIGS. 6 and 9 illustrate lamp socket 18 incorporating a film cutout inwhich film cutout 134 is of a wafer type insulating material that breaksdown when a certain minimum value of voltage is applied across contactprongs 138 of the film receptacle so that an electrical current can flowacross the cutout 1334, thereby short circuiting lamp socket shell 144and central contact 148. in this manner a fault in the socket 18 causesthe latter to be taken out of the series circuit. The particularluminaire illustrated in FIG. 1 has a lamp socket 18 that does notincorporate a film cutout; therefore the electrical connections are madedirectly to socket terminals 74 and are securely held in place byterminal screws As shown in FIGS. 6 and 9, however, a film cutout may beincorporated in the socket structure. FIG. 6 shows a film cutout cap 120fabricated from porcelain and having a cap handle 128 inserted andpositioned in the outer end of the socket 118. A cap bumper ring 122made of a compressible material, such as felt or rubber, separates the.porcelain socket 18 and the porcelain cap 120. Electrical connectionsmay be made to the lamp socket terminals 74 located on each side of thelamp socket 18.

FIG. 9 shows the lamp socket 18 incorporating a film cutout in which thelamp socket shell 14 i is mounted within a recess in the inner end ofthe lamp socket 18. The socket shell 144 is connected to one of theterminals 74 by a bolt 142. The remaining terminal 74 is connected tothe socket central contact 148 by the other bolt 142, and the centralcontact 148 is held in operative position by a socket spring 146. Thefilm receptacle contact prongs 138 are mounted on the elongated socketbolts 142 and extend into a recess in the outer end of the lamp socketbody 18 and are of a resilient conducting material and biased to engageeach other at their free ends. The film receptacle cap 120 can also bemade of porcelain, and mounts film holder prongs 136 by means of spacednut and bolt assemblies 135, respectively, passing through the filmreceptacle cap 120. A film cutout 134 separates the free ends of thefilm holder prongs. The film holder and the film receptacle operate in amanner as described in the previously known prior art. It is to benoted, that the film holder and the film receptacle are readilyaccessible when the closure assembly is in its open position.

Mounted within the housing 11 as shown in FIG. 1, is the generallyinverted dish-shaped ovate reflector 14, previously mentioned. The ovatereflector 1 has a flattened end adjacent the housing slipfitter with anaperture 17 located centrally therein. About the open periphery of thereflector 14 is an outwardly extending reflector flange 80, which has afelt gasket 76 securely mounted on the lower surface thereof. To formthe reflector flange 8d, the material of the reflector 14 is bent backon itself at its lower portion as shown at 81, thereby to produce afolded lower edge 83, and the edge portion of the upwardly bent portion81 is then bent outwardly to form the reflector flange 81}.

Approximately diametrically opposite to the reflector aperture 17, andmounted to the upper surface of the outwardly extending reflecter flangeby means of a rivet S4, is an upwardly extending reflector latch $2. Thereflector latch 82 is an upwardly extending, flat, spring steel member,arcuately bent adjacent its outer end to form a detent 85. Formedintergally with the housing 10, and extending dowardly from the innerupper surface of the housing 10 are two latch bosses 86, as shown inFIG. 8. A latch stop or catch 90, of a generally U-shaped configuration,with the ends of its legs extending outwardly, is mounted between thetwo latch bosses 86 and secured thereto by two bolts 3?. The detent ofthe reflector latch 82 engages the bight portion of the latch stop orcatch 90 to secure the reflector 14- in position.

A flat right angle gasket plate 77 (FIGS. 1 and 6) having an aperture inits downwardly extending leg to receive the lamp socket 18 is mounted,by any convenient and known method such as spot welding, to the bightportion 69 of the socket mounting strap 66. About the aperture in thegasket plate 77, a circular gasket 70 of a compressible material, suchas felt or rubber, is mounted. The reflector 1 1 having the aperture 17is inserted into the housing 10 in such a manner that the reflectoraperture 17 telescopes over the lamp socket 118, with the peripheryadjacent the reflector aperture 17 abutting against the .felt gasket'70. Then the opposite end of the reflector 14 is raised in order todepress the resilient reflector latch 82 until its detent engages thelatch stop 90. In this manner, the reflector 14- has at least atwo-point suspension, namely, at the latch 82 and the lamp socket 18,with the uppermost ovate portion of the reflector 14 being engageablewith the longitudinal rib 13 and perhaps a part of at least one of thelateral ribs 15 located on the upper iner surface of the housing 14 Thesuspension of the reflector 14 on the lamp socket 18 and the latch stop90 is such that a small amount of tilting of the reflector 14 canpossibly occur, so that the groove 23 in the reflector may not beproperly fitted with the longitudinal rib 13. Upon closing the refractorring 21 the refractor flange 73 will tend to engage the gasket 76 andthe reflector flange 80, with constant uniform pressure and thereflector 14 will automatically be tilted to its proper operativeposition so that the grove 23 will be properly fitted with thelongitudinal rib 13. By having the longitudinal rib 13 and the lateralribs 15 in the housing 10, the reflector 14 engages the inner portion ofthe housing 10. It is to be noted that the reflector 16 as depicted inFIG. 2 can be designed to have a smooth contour for a particular lightdistribution to thereby eliminate the longitudinal groove 23. Evenwithout the longitudinal grove 23 the upper surface of reflector 14 willengage the ribs 13 and 15 or" the housing 11} with a minimum of surfacecontact and of resultant friction between the aforesaid ribs and thereflector 14, during any tilting thereof as described above.

As shown in FIG. 1 of the drawings, opposite the lamp socket 18 andclosely adjacent to the reflector latch 82 there is located a latchasembly 26. As shown in FIGS. 1, 7 and 8, two upwardly extendingbearings 98 are formed integrally with the refractor ring 21 and have alatch pin @4 extending therebetween. A latch 92 is rotatably mounted onthe latch pin 94, and is biased in a clockwise direction as viewed inFIG. 1 by a coiled spring 96 as shown in FIGS. 7 and 8. The latch 92 hasat its lower end a contoured latch handle 133 which in this example iscast of one piece aluminum, with the latch handle 133 extending at rightangles and outwardly of the latch 92., The latch 92 extends through aslot 97 in a recesed portion 99 of the refractor ring 20, with the outerend of the contoured latch handle 133 abutting against the horizontalportion of the recessed portion 99 when the latch 92 is in its closedposition.

resiliently biased coiled As shown in FIGS. 7 and 8 of the drawings, thespring 96 consists of two coiled sections Wrapped around the latch pin94 and connected by a bight portion 131 that abuts against the latch 92.To anchor the coiled spring 96, the ends 130 engage the horizontalportion or" the recess 99. In its closed position, the latch S72 abutsagainst the. latch stop htl at the latch stop projection 132 thereof.The latch spring 96 is stresed to bias the latch 2 to the closedposition, but as shown in FIG. 1, the latch is prevented from furtherrotation by the engagement of the latch handle 133 with the underside ofthe refractor ring 20. The latch 92 has a cam front surface 93 at theupper end so that even though the latch 92 is constantly biased to theclosed position, when the refractor ring 211 is raised to its closedposition, the cam surface hit, by engaging the latch stop projection 132of the latch stop 90, will move the latch 92 so as to rotate it in acounterclockwise manner until the hori zontal surface 95 of the latch 92can engage the upper horizontal surface of the latch stop 9t} whereuponthe spring 96 moves the latch 92 to the closed position. As shown inPEG. 7 and 8 of the drawings, the latch pivot pin is securely held inplace by a push on nut 124-.

Another embodiment of this invention is shown in FIG. 2 of the drawings.Identical reference numerals are used in this embodiment for the partsthereof which are identical to the embodiment of the invention shown inFIG. 1. As shown in FIG. 2, the housing 12 has a much longer slipfltterportion 34 extending outwardly from the housing 12, thereby providingmore space for mounting associated electrical components. The reflectorsection 36 of the housing 12 incorporates a latch assembly Z6cooperating with a hinge asembly 24 to releasably support the refractorring 21} having a refractor 22. The mounting of the lamp socket 18 issubstantially the same as is used in the luminaire of PEG. 1 in which asocket mounting strap 66 extends between and is secured to integrallycast socket mounting bosses 63 located in the side walls of the housing12. A gasket 1 0, made of any suitable material such as felt, separatesthe gasket plate 77 from the reflector 16. In the particular embodimentshown, the reflector 16 may have a different contour to its upper innersurface, but this goes to its optical characteristics and does notconstitute a part of the invention.

Felt gasket 76 and a reflector flange 8i cooperate as previouslydescribed, with the refractor flange 78 when the refractor ring 219 isin its closed or operative position.

Mounted immediately adjacent to and above the lamp socket 118 is atransformer having a coil 156 and core 153. The transformer coil 156 andits core 153 are secured to an elongated trapezoidal flat mounting plate153 by a nut and bolt assembly (not shown). The mounting plate 153 issecured to integrally cast housing transformer bosses 152 located on theupper inner surface of the housing 12 at each side and is securedthereto by the transformer bolt assemblies 154 threadedly engagingtapped holes (not shown) located within the housing transformer bosses152.

To the rear and immediately adjacent to the transformer core and coilassembly, and on the inner periphery of the housing 12, there isintegrally formed a slot 1&1 into which a flat, heat bafiie plate 16%may be slidably mounted. The heat baffle plate 166 may be made of anysuitable heat barrier material, for example, a heat reflecting materialsuch as aluminum, and is securely held in place by any suitable method,such as by spot welding to the housing 12.

Since the particular embodiment shown in FIG. 2 requires a constantwattage or regulated output ballast and also a high power factor, highreactance type ballast, a certain amount of capacitance is required togive the desired power factor. It is to be noted that construction ofthis luminaire should not be limited to the use of a capacitive means asthe capacitive means may be eliminated should no power factor correctionbe needed. As shown in FIGS. 2 and 12 of the drawings, capacitors 162having capacitor terminals 176 facing outwardly of the reflector 16, aremounted immediately adjacent to the heat baflie plate 16d and aresupported within the housing 12 by the hinge support strap 166. Thehinge support strap 166 is of sufiicient width to adequately support thecapacitor 162 when they are in their mounted or operative position.

As shown in FIG. 12, when the hinge support strap 166 is drawn upwardlyby tightening bolts 163, the capaci tors 162 will engage the upper innerperiphery of the elongated housing 12. Hinge support bosses 208 areformed integrally with the inner side wall of the housing 12 and havetapped holes 209 through which the bolts 168 will be threadedly engaged.

As shown in FIGS. 2 and 12, there is integrally formed slightly belowand to the rear of capacitor support bosses 2%, two hinge support bosses2%, each having tapped holes 2%. By means of hinge support boltassemblies 168 engaging the threaded tapped holes 269, and L-shapedchannel hinge support 166 is mounted within the underside of thehousing. An L-shaped hinge hanger having its base leg facing towards thereflector 16 is mounted to the hinge support 166 by means of nut andbolt assemblies 2&2. As shown in FIG. 11 of the drawings, the base legof the hinge hanger 1136 has hinge hanger rings lid, to which therefractor ring 2% is rotatable and detachably mounted in the mannerpreviously described. It is readily apparent that the identicalrefractor ring 20 and its associated hinge assembly 24 as used in theprior embodiment of the invention may be used in the embodiment nowbeing discussed.

As shown in FIG. 2, immediately adjacent to and rearwardly of thecapacitors 162, there is located a terminal block 178, which issuspended from two bosses 172 formed integrally with the inner upperperiphery of the housing 1! at each side by means of a hanger 176mounted on the bosses 172 by bolt assemblies 1'74. The terminal block173 is located in the lower half of the housing 12 with its terminals1'79 facing downwardly so that it is readily accessible to the capacitorterminals 171 and other electrical components that need be wired.

Outwardly of the terminal block 1'78 a pipe stop 182, formed integrallywith the housing 12 extends downwardly from the upper wall of thehousing 12 and between the side walls of the housing. A pair oflongitudinally spaced pipe clamp bosses 186 are located on each side ofthe elongated housing slipfitter portion 34% outwardly of the pipe stop132 and extend downwardly and have a pipe clamp 18 extending between theoppositely disposed walls of the inverted housing slipfitter 34. Thepipe clamps 184 are adjustably mounted to the housing by means of pipeclamp bolts 18% threadedly engaging the pipe clamp bosses res.Intermediate of the pipe clamp bosses 1556, and integral with thehousing slipfitter 34, there is located a downwardly extendingpositioning boss or rocker fulcrum 218 extending across the bightportion of the inverted U-shaped housing slipfitter portion 34-. If alarge pipe support is used, the upper surface thereof will engage thepositioning boss 218. integrally formed with the housing slipfitterportion 34 located on each side of the positioning boss 218, are adapterbosses 220. A tapped hole in each adapter boss Z20, threadedly receivesadapter bolts 222 which secure an adapter 224 to the bight portion ofthe housing slipfitter portion 34. The adapter 224 is used to secure asmaller pipe support, such as pipe support 4t to the housing slipfitterportion 34, thereby supporting the luminaire. Positioning boss 218 oradapter 224 cooperating with pipe support 413 or 41, respectively, actas the upper support for mounting the luminaire. Bolts 18% may beadjusted in the threaded pipe clamp bosses 186 to obtain a longitudinalvertical rotation of the luminaire housing 119.

As shown in FIGS. 2 and of the drawings, there is located on each sideof the housing rear flange wall 2%, a cover hinge support 194 which hasa hook-shaped portion 198 at its outer end. Each cover hinge support 194is attached to the housing flange wall 2% by means of a rivet 196. Acover 130, which has a substantially central longitudinal channel asshown in FIG. 12, extends from a point adjacent the hinge assembly 24 tothe outer end of the housing slipfitter portion 34. At its rearmostportion, and at each side, there are located two cover apertures 212, asshown in FIG. 13, which may be detachably mounted to the cover hingesupport hooks 193. As shown in FIGS. 2, 10 and 13, the cover 18% maythen be rotatably moved to the horizontal position and secured in itsclosed position by quick disconnect locking devices 210 which engagecover plate 214.

Since this embodiment of the invention incorporates the use of theretractor ring 2t} as previously discussed in the prior embodiment, aportion of the bottom surface of the luminaire would be exposed; but,this portion is closed by two additional cover plates 214 located atopposite sides of the inner end of the refractor ring 20 and removablymounted to the housing 12 by cover plate screws 216. it is thusapparent, thatthe refractor ring may be rotated to an open positionhaving its hinge assembly midway of the housing slipfitter portion 34.The cover 186 may be rotated about the cover hinge 192 to thus expose,in conjunction with the open retractor ring, all of the bottom surfaceof the housing slipfitter portion 34. If the transformer core or thecapacitors 16?. need be removed and more area, therefore, is required,the side cover plates 214 can be readily removed.

As previously pointed out, it is desired that this invention be notlimited to the particular embodiments of luminaires specificallydescribed herein, as it will be readily apparent to persons skilled inthe art that various changes and modifications may be made in theseparticular constructions without departing from the broad spirit andscope of this invention. Thus, the lighting fixture may have variousforms of housing or support, which can be used with or without arefractor, and various other components interchangeably made. These areillustrative, but not limiting, as to other forms which this inventionmight take and of various other ways in which the invention could beused. Accordingly, it is desired that the invention be given a broadscope interpreted broadly and that it be limited only in accordance withthe prior art.

We claim as our invention:

1. A luminaire comprising a relatively shallow inverted dished housingwith a bottom opening, means adjacent one end of said housing forsupporting the housing, an inverted dished reflector having a bottomperipheral opening, means for loosely and removably mounting saidreflector within said housing, a closure assembly hingedly secured tosaid housing, a latch means located on said closure assembly oppositesaid hinge mounting, an aperture in said closure assembly substantiallyof the same size as the bottom opening of said reflector, a retractorhaving an outturned flange lying over said aperture, means for securingsaid refractor flange to said closure assembly, said refractor flangeengaging the bottom peripheral opening of said reflector when saidclosure assembly is in its latched closed position, thereby to tiltadjustably said reflector about its longitudinal axis in order toposition said reflector in its operative position.

2. A luminaire comprising a relatively shallow inverted dished housingwith a bottom opening, means adajcent one end of said housing forsupporting the housing with its bottom opening substantially horizontal,lampholding means mounted in said housing for supporting a light source,an inverted dished reflector having a bottom opening mountedsubstantially within said housing, an aperture in said reflectoradjacent said supporting means and of a size to accommodate saidlampholding means, said engaging the reflector lampholding means beingone support for said reflector in its operative position, a resilientspring latch secured to the outer surface of said reflector oppositesaid aperture in said reflector, a catch mounted within said housingengaged by said resilient latch, the upper wall of said reflectorfrictionally engaging the inner top wall of said housing, and saidaperture, said resilient latch, and said upper wall of said reflectorbeing a three-point support for said reflector in said housing.

3. A luminaire comprising an inverted dished housing, means at one endof said housing for supporting the housing, an inverted dished reflectorhaving a bottom opening, said reflector being mounted at least partiallywithin said housing, a closure assembly for the bottom opening of saidclosure, hinge means on said housing and closure assembly, said hingemeans disposed for separation by movement transversely of said housing,projecting means on said closure assembly positioned to engage an innerportion of said housing to prevent separation or" said hingle meansexcept at a position beyond free-hanging open position of said closureassembly, resilient means on said housing engaging said projecting meanswhen said closure assembly is at a position beyond the freehanging openposition, said closure assembly being removable from said housing whensaid resilient means is biased so as to disengage said projecting means.

4. A luminaire comprising an inverted dished housing having a bottomopening, means adjacent one end of said housing for supporting thehousing with its bottom opening generally horizontal, an inverted dishedreflector mounted substantially within said housing and having sideswhich form a bottom opening angularly dis placed relative to the bottomopening of said housing, a peripheral flange around the reflectoropening, a gasket on said reflector flange, an aperture in saidreflector, lampholding means mounted in said housing and extendingthrough said aperture for supporting a light source and supporting oneend of said reflector, a gasket mounted on a plate adjacent saidlampholding means so as to cover the portion of said aperture notoccupied by said lampholding means, a latch stop secured to one of saidhousing and said reflector generally opposite said lampholding means,resilient means on the other of said housing and said reflectorbiasingly engaging said latch stop, a closure assembly for the bottomopening of said housing hingedly secured to the underside of saidhousing and presenting an opening the periphery of which is angularlydisplaced relative to the bottom opening of said housing so as to beadapted to align with the reflector opening, a refractor mounted on saidclosure assembly by means of an outturned flange on said refractoroverlying the edges of an aperture in said closure assembly and flangewhen the closure assembly is in its latched closed position so that itseals the bottom opening of said reflector and provides, in combinationwith the gasket on the plate, for sealing of the refiector aperture whenthe reflector aperture is biased towards said lampholding means by saidresilient means so as to present a tilted sealed optical system in agenerally horizontally disposed housing.

5. A luminaire comprising an inverted dished housing having a bottomopening, means adjacent one end of said housing for supporting thehousing with its bottom opening substantially horizontal, an inverteddished reflector having a bottom opening and being mounted at leastpartially within said housing, the bottom opening of said reflectorbeing disposed at an angle with respect to the bottom opening of saidhousing, an aperture in said reflector, a mounting strap secured to theinside of said housing, a gasket plate secured to said strap, anaperture in said gasket plate substantially in registration with saidreflector aperture, a gasket on the side of said gasket plate adjacentsaid reflector, the gasket surrounding the registered apertures andplaced so as to generally lie between said apertures, lampholding meansextending through said registered apertures for supporting a lightsource and for supporting one end of said reflector an thus sealing thereflector aperture, a catch secured to on of said housing and saidreflector generally opposite said lampholding means, resilient means onthe other of said housin and said reflector biasingly engaging saidcatch to support said reflector and bias said reflector towards saidgasket plate, a gasketed peripheral flange around said bottom opening ofsaid reflector, a closure assembly hingedly mounted to said housing, areleasable latch means for securing said closure assembly to saidhousing in a closed position, an outer rim of said closure assemblymating with the open bottom of said housing when in a closed position,and a refractor having a peripheral flange mounted in said closureassembly with said refractor flange engaging said gasketed reflectorflange when the closure assembly is in a closed position so as topresent a tilted sealed optical system in a substantially horizontallydisposed housing.

6. A luminaire comprising a relatively shallow inverted dished housingwith a bottom opening, means adjacent one end of said housing forsupporting the housing with its bottom opening substantially horizontal,lampholding means mounted in said housing for supporting a light source,an inverted dished reflector having a bottom opening and mounted atleast partially within said housing, an aperture in said reflectoradjacent said supporting means and of a size to accommodate saidlampholding means, said lampholcling means being one support for saidreflector, a resilient spring latch mounted on one of said housing andsaid reflector generally opposite said aperture in said reflector, acatch mounted on the other of said housing and said reflector andengaged by said resilient latch, said resilient latch providing anothersupport for said reflector so that said lampholding means and saidresilient latch form at least a two-point support for loosely mountingsaid reflector in said housing.

7. A luminaire comprising an inverted dished housing having a peripheralbottom opening, an inverted dished reflector having a peripheral bottomopening, said reflector mounted at least partially Within said housing,the periphery of the bottom opening of said reflector disposed at anangle with and located beneath the periphery of the bottom opening ofsaid housing, an outwardly extending flange about the periphery of thebottom opening of said reflector, lampholding means mounted in saidhousing and extending toward said reflector for supporting a lightsource therein, a closure assembly hingedly secured to the underside ofsaid housing, said closure assembly including a refractor, an outwardlyextending flange on said refractor engaging the flange on said reflectorin the closed operative position of said closure assembly, saidreflector being aligned relative to said refractor and being coveredthereby in said operative position.

8. A luminaire comprising a relatively shallow housing with oppositeends and a bottom opening periphery, means adjacent one end of saidhousing for supporting the housing, a relatively deep inverted dishedreflector mounted at a position spaced from both ends of said housing,said reflector having a bottom opening periphery extending below saidhousing and disposed in a plane angularly displaced with respect to aplane passing through the bottom opening periphery of said housing, anaperture in said reflector adjacent said supporting means, lampholdingmeans secured to said housing and extending towards said aperture forsupporting a light source in said reflector, said lampholding meansbeing at least partially located beneath the bottom opening periphery ofsaid housing, and a closure assembly hingeclly mounted adjacent said onehousing end, portions of said closure assembly enclosing the bottomopening peripheries of said housing and said reflector and containingsaid lampholding means when in its closed operative position.

9. A luminaire comprising an inverted dished housing with a bottomopening, means adjacent one end of said housing for supporting thehousing with the periphery of its bottom opening in one plane, aninverted dished reflector having a bottom opening and mounted at leastpartially in said housing, the periphery of the bottom opening of saidreflector lying in another plane angularly displaced with respect tosaid one plane, said reflector periphery being located at leastpartially downwardly of said one plane, lampholding means mounted atleast partially within said reflector and sealed therewith, a closureassembly hingedly secured to the underside of said housing, a refractorhaving a top opening and secured with said closure assembly, theperiphery of the top opening of said refractor lying generally in aplane parallel with said other plane and sealingly engaged with theperiphery of the bottom opening of said reflector when the closureassembly is in its operative closed position.

10. A luminaire comprising a relatively shallow inverted dished housingwith a bottom opening, lampholding means secured to said housing forsupporting a light source, an inverted dished reflector having a bottomopening and mounted at least partially within said housing, saidreflector including an aperture fitted over a portion of saidlampholding means and being at least partially rotatable thereabout, aresilient member secured to one of said reflector and said housing at aposition generally opposite said aperture in said reflector, catch meanssecured to the other of said reflector and said housing and releasablyholding said resilient member, a light transmitting member, meanshingedly securing said light transmitting member to the underside ofsaid housing, said light transmitting member having a top opening theperiphery of which is engageable with the periphery of the reflectorbottom opening in the closed operative position of said lighttransmitting member, said lampholding means and said resilient memberrendering said reflector at least partally tiltable in a universalmanner for optical alignment when engaged by said light transmittingmember.

11. A luminaire comprising an inverted dished housing, means adjacentone end of said housing for supporting the housing, an inverted dishedreflector mounted substantially within said housing, an aperture in saidreflector, lampholding means mounted in said housing and partiallyextending through said aperture for supporting a light source andsupporting one end of said reflector, a catch mounted in said housinggenerally opposite said lampholding means, resilient means on saidreflector engaging said catch, said lampholding means and said catchproviding at least a two-point support for said reflector, a closureassembly for the open bottom of said housing and being hingedly securedthereto, releasable latch means on said closure assembly for engagingsaid catch.

12. A luminaire comprising a relatively shallow inverted dished housingwith opposite ends and a bottom opening, a relatively deep inverteddished reflector hav ing a bottom opening and mounted at a positionspaced from both ends of the housing, support means adjacent one end ofsaid housing for mounting the housing with its bottom openingsubstantially horizontal, said reflector having its bottom openinglocated at least partially beneath the bottom opening of said shallowhousing and angularly displaced relative to the bottom opening of saidhousing, lampholding means secured to said housing and extending towardssaid reflector for supporting a light source therein, a closure assemblyhingedly mounted to said housing adjacent said one end, and an angularlydisplaced refractor mounted in said closure assembly and mating withsaid .angularly displaced reflector in the closed operative position or"said closure assembly.

13. A luminaire comprising an inverted dished housing, means adjacentone end of said housing for supporting the housing, an inverted dishedreflector mounted substantially within said housing, an aperture in saidreflector, a socket mounting strap secured to the inner portion of saidhousing, a plurality of rows of cooperating aperture means associatedwith said strap, a socket having a light source holding portion and abase, said base being provided with apertures which register with anycooperating pair of said aperture means, means for securing said base tosaid aperture means in any one of a plurality of positions so as to makeprovision for adjusting the position of said light source, said lightsource holding portion extending through said reflector aperture in anyadjusted position of said socket and supporting one end of saidreflector, means mounted in said housing for supporting the other end ofsaid reflector, an extension of said socket strap juxtaposed with saidreflector and having an aperture in registration with said reflectoraperture, sealing means located between the juxtaposed portions of saidsocket strap and said reflector around the periphery of said reflectoraperture, said socket registering with said sealing means duringadjusting movement thereof relative to said reflector so that saidreflector aperture remains sealed at any adjusted position of saidsocket.

14. A luminaire comprising a relatively shallow inverted dished housinghaving an elongated configuration and a bottom opening periphery, arelatively deep inverted dished reflector having a bottom openingperiphery and being mounted at a position spaced from both ends of saidhousing, lampholding means mounted within said housing and forsupporting a light source in said reflector, the bottom openingperiphery of said reflector being located at least partially beneath thebottom opening periphery of said housing and angularly displaced withrespect thereto, an at least partially light-transmitting closureassembly hin edly secured to said housing, said closure assembly havingan outer rim portion covering the bottom opening periphery of saidhousing, said closure assembly in addition having an inner ring-shapedportion angularly displaced with respect to said outer rim portion andengaging the bottom opening periphery of said reflector, said reflectorand said closure assembly cooperating to form a weatherproof enclosurefor the luminaire optical system.

15. A luminaire comprising a relatively shallow dished housing with abottom opening, an elongated inverted generally U-shaped channel formingone end of said housing, an open bottomed dished reflector mounted partially within said housing and extending partially below the bottomopening periphery of said housing, said reflector being tilted withrespect to said housing such that the bottom opening periphery of saidreflector is angularly displaced with respect to the bottom openingperiphery of said housing, lampholding means for supporting a lightsource in said reflector, said lampholding means secured to said housingand including socket and terminal portions located at least partiallybeneath the bottom opening periphery of said housing, ballast means atleast parts of which are mounted closely adjacent to said reflector anddirectly over said lampholding means, and a closure assembly hingedlymounted to said channel, an inner portion of said closure assemblymating with the periphery of the reflector bottom opening and an outerportion of said closure assembly enclosing the bottom opening peripheryof said housing and said channel and containing the parts of thereflector and lampholding means extending below the bottom openperiphery of said housing.

16. A luminaire comprising an inverted dished housing having a bottomopening defined at least partially by a rim and disposed substantiallyin one plane, a slipfitter located adjacent one end of said housing, aninverted dished reflector located generally in said housing and having abottom opening generally defined by a flange and disposed substantiallyin another plane angularly displaced from said one plane, lampholdingmeans mounted Within said housing for supporting a light source in saidreflector, a closure assembly hingedly attached to said housing, a rimof said closure assembly juxtaposed with said bottom rim of said housingwhen in a closed position, and a refractor having an upper openinggenerally defined by a flange and mounted in said closure assembly withsaid refractor flange sealingly engaged with said reflector flange whenthe closure assembly is in said closed position.

17. A luminaire comprising a relatively shallow dished housing with abottom opening, an inverted U-shaped channel formed at one end of saidhousing, said channel including means for supporting said housing withthe periphery of its bottom opening in one plane, an inverted dishedreflector having a bottom opening and mounted substantially within saidhousing, the periphery of the bottom opening of said reflector lying inanother plane angularly disposed with respect to said one plane,lampholding means for supporting a light source in said reflector, saidlampholding means located at least partially outwardly of said housingbottom opening and being secured to said housing, a closure assemblyhingedly and removably secured to the underside of said housing, arefractor contained within said closure assembly and having a topopening the periphery of which is normally engaged with the periphery ofthe bottom opening of said reflector, electrical components mountedadjacent said reflector and in said inverted U-shaped channel, saidclosure assembly being rotatable to an open position thereof therebyexposing the electrical components mounted within said housing.

18. A luminaire comprising a relatively shallow dished housing with abottom opening, an inverted U-shaped channel formed at one end of saidhousing, said channel including means for supporting said housing withthe periphery of its bottom opening in one plane, an inverted dishedreflector having a bottom opening and mounted substantially within saidhousing, the periphery of the bottom opening of said reflector lying inanother plane angularly disposed with respect to said one plane, saidreflector being tilted downwardly at its end adjacent said channel toprovide added space in at least one of said housing and channel,lampholding means for supporting a light source in said reflector, saidlampholding means located at least partially outwardly of said housingbottom opening and being secured to said housing, a closure assemblyhingedly and removably secured to the underside of said housing, arefractor contained within said closure assembly and having a topopening the periphery of which is normally engaged with the periphery ofthe bottom opening of said reflector, electrical components mountedadjacent said reflector and at least partly in said space, said closureassembly being rotatable to an open position thereof thereby exposingthe electrical components mounted within said housing.

19. A luminaire comprising an inverted dished housing having a bottomopening, means adjacent one end of said housing for supporting thehousing with it bottom opening generally horizontal, a dished reflectorhaving sides which form a bottom opening angularly displaced relative tothe bottom opening of said housing, said reflector being mounted atleast partially within said housing, lampholding means secured to saidhousing for supporting a light source in said reflector, a closureassembly for the bottom opening of said housing hingedly mounted to saidluminaire adjacent said one end and presenting an opening angularlydisplaced from the housing opening so as to be adapted to align with thereflector opening, and a refractor mounted in said closure assemblyopening to coextend with the bottom opening of said reflector when saidclosure assembly is in its operative closed position.

20. A luminaire comprising a relatively shallow inverted dished housingwith a bottom opening, means for supporting said housing, an inverteddished reflector having a bottom opening and mounted substantiallywithin said housing, an aperture in said reflector, lampholding means,supporting means in said housing on which said lampholding means isadjustably mounted at a position to register with said reflectoraperture, said lampholding means extending through said aperture tosupport the adjacent end of said reflector, means for sealing saidreflector aperture including a gasket located about said opening and inengagement with said reflector and lampholding means, said lampholderregistering with said gasket during adjusting movement of saidlampholder so that said reflector aperture remains sealed in anyadjusted position of said lampholder, a catch secured to one of saidhousing and said reflector generally opposite said lampholding means,resilient means on the other of said housing and said reflectorbiasingly engaging said catch to support the end of said reflectoropposite said aperture end, said resilient means biasing said reflectortowards said supporting means so that said reflector aperture is sealed.

References Cited in the file of this patent UNITED STATES PATENTS1,320,174 Recker Oct. 28, 1919 1,761,528 Fyrberg June 3, 1930 2,169,181Kost Aug. 8, 1939 2,289,160 Yost July 7, 1942 ing. 1957.

18 Bjontegard -2- Nov. 22, Cator et al. Feb. 5, Yonkers Sept. 30,Phillips May 4, Bjontegard Sept. 6, Elmer Jan. 24, McGinty et al. Oct.16, Loehr Jan, 22, Foulds May 6, Harling June 24, Bobrick June 24, Burnset a1. Aug, 26, Appleton Oct. 13, Beach et al. Oct. 13, Paine et a1.Nov. 17, Cervini Nov. 24, Akely et al. Nov. 24, Rex July 19, Husby Jan.31, Husby Mar. 7,

OTHER REFERENCES ype OV- Luminaire & Mount- Renewal Parts Data -156 AL,pg. 1, Feb. 1,

